If you need to hire an ASP.NET Core developer for security-critical work, this is the exact niche I specialize in. ASP.NET Core projects tend to show up on my desk when security and authentication actually matter — not as a checkbox, but as the reason the project exists in the first place. A marketing site doesn’t need enterprise single sign-on. A booking flow that touches customer accounts across a retail brand does. A mobile backend handling mental-health data absolutely does.
I’m a Full-Stack & AI Integration Engineer based in Lahore, Pakistan, with 6+ years of experience building for clients across the EU and US, remotely. My ASP.NET Core work centers on three things: designing secure APIs authenticated through Azure Active Directory (now Microsoft Entra ID), building backends that pair cleanly with modern JavaScript frontends like React and Vue, and handling compliance-sensitive data with the access control and audit discipline that regulated or high-trust applications require.
If you’re hiring an ASP.NET Core developer because your product needs enterprise SSO, because a compliance or security review flagged your current auth setup, or because you’re integrating a .NET backend with a React or Vue frontend and need someone who’s done that integration correctly, this is the work I do.
What to Expect When You Hire an ASP.NET Core Developer
Secure APIs with Azure AD / Entra ID Authentication
Azure Active Directory authentication — Microsoft has renamed the platform to Entra ID, though most teams still say “Azure AD” — sits at the center of a lot of my ASP.NET Core work. The flow is standard OAuth 2.0 / OpenID Connect: a user authenticates against the Azure identity provider, the client receives a token, and that token gets passed to the API on every subsequent request, where the API validates it against Azure’s signing keys and extracts claims.
Described that way, it sounds simple. In practice, it’s one of the easier things to get subtly wrong. Token validation needs to check issuer, audience, expiry, and signature correctly. Refresh flows need to be handled so users aren’t silently logged out. Scopes and app roles need to be modeled deliberately so authentication and authorization don’t get collapsed into the same check. Any of these mistakes tends to fail quietly.
On the Specsavers–Lonely Planet project, I built the secure user-management APIs behind Azure AD from the ground up — configuring the app registration, wiring middleware in ASP.NET Core to validate tokens on every request, and making sure the authorization model matched how the business actually needed access segmented.
ASP.NET Core Backends Paired with React / Vue Frontends
A large share of the ASP.NET Core work I take on is a C# API backend serving a separately built React or Vue frontend. API contract design is the first consideration — DTOs, error response format, pagination conventions, and versioning all need to be decided deliberately, not improvised endpoint by endpoint.
CORS is the second, and it’s the one I see mishandled most often. I configure CORS policy deliberately per environment — permissive locally, locked to known origins in staging and production. Token handling across the boundary is the third: where the frontend stores a bearer token, how it’s attached to requests, how expiry and refresh are handled. I built exactly this pairing — a React frontend, an ASP.NET Core backend, Azure AD-issued tokens moving between them — on the Specsavers–Lonely Planet booking and collection flow.
Compliance-Sensitive Applications
Some ASP.NET Core projects come with a baseline expectation that data handling matters. Minplan, a mobile-app backend I built on ASP.NET Core, is the clearest example: it’s a mental-health and suicide-prevention application, which meant reliability and data sensitivity were non-negotiable from day one.
Building for that kind of sensitivity shapes decisions throughout the backend: granular access control enforced at the API layer, audit trails capturing who accessed or changed sensitive data, and data minimization so the API doesn’t return more than the consuming client needs. None of that is exotic engineering — it’s disciplined, unglamorous work applied consistently.
Why This Matters
A generalist .NET developer can build you a working CRUD API and get a React frontend talking to it. But Azure AD / Entra ID integration, correct OAuth/OIDC token validation, and access-control design for sensitive data are a narrower skill set that most .NET developers touch occasionally rather than repeatedly. The failure mode isn’t that the app doesn’t run — it’s that it runs, looks correct in a demo, and has a token validation gap or an over-permissive CORS policy that doesn’t show up until a security review or a real incident.
That gap is exactly the niche I’ve built my ASP.NET Core work around: enterprise SSO via Azure AD, secure API design for frontends built by a separate team, and backend architecture for applications where a data-handling mistake has real consequences — whether regulatory, reputational, or, as with Minplan, about the wellbeing of the people using the product.
Proof
Specsavers – Lonely Planet App
This project paired a React frontend with an ASP.NET Core backend to power a booking and collection flow. Because it sat under a recognizable retail brand, authentication couldn’t be an afterthought — user identity and access needed to be handled through Azure Active Directory from the start.
My role covered the secure user-management APIs on the ASP.NET Core side, authenticated via Azure AD. That meant setting up the app registration and token validation correctly, designing the API endpoints the React frontend would call, and making sure the authorization model matched how access actually needed to be segmented. The result was a booking and collection flow with enterprise-grade authentication behind it, built to the standard a well-known retail brand’s customer-facing product needs.
Minplan
Minplan is a mobile application in the mental-health and suicide-prevention space, which meant the mobile-app backend I built on ASP.NET Core carried a different weight than a typical consumer app API. I built the backend APIs the mobile app depended on with that context driving the architecture: access to sensitive user data scoped and checked deliberately, the backend built to be dependable under real usage, and data handling treated as a first-class design concern throughout.
How Engagements Work
Every engagement starts with a scoping call, and for ASP.NET Core work specifically, that conversation goes deeper on security and compliance requirements. I want to understand upfront: what identity provider you’re on or moving to, what data your API touches, who else is consuming the API, and whether there’s an existing codebase or security review I’m building toward.
- Scoping call. Technical requirements, authentication setup, data sensitivity, existing codebase or infrastructure.
- Proposal. Approach, API design, auth flow, integration points, timeline and engagement structure.
- Build, with visibility. Regular, reviewable increments. For auth and security work, your team’s eyes on the approach early.
- Handoff or ongoing support. Clean handoff with documentation, or continuing as the ASP.NET Core developer of record.
Engagement & Pricing
- Fixed-scope projects — a defined API or auth integration with clear deliverables.
- Hourly engagements — ongoing development, iteration on an existing codebase.
- Retainer arrangements — for teams needing an ASP.NET Core developer available on an ongoing basis.
I don’t publish flat rate cards because ASP.NET Core work varies too much by complexity. Pricing is always discussed and confirmed during scoping, before any work begins.
For the identity platform referenced throughout this page, see the official Microsoft Entra ID documentation. If your project also needs a Node.js or Laravel service alongside ASP.NET Core, see my Node.js development and Laravel API development pages.
FAQ
Do you work with Azure AD, or is it Microsoft Entra ID now?
Both terms refer to the same platform — Microsoft rebranded Azure Active Directory as Microsoft Entra ID. I work with the platform under either name.
My frontend isn’t in React or Vue — can you still build the ASP.NET Core backend?
Yes. My proven pairing experience is with React and Vue, but a well-designed ASP.NET Core API is consumable by any modern frontend framework or mobile client.
Have you worked on health-data-sensitive applications?
Yes — Minplan, a mental-health and suicide-prevention application, is the clearest example.
Can you take over an existing ASP.NET Core codebase, or do you only build from scratch?
Both. The scoping call includes time to review the existing codebase and auth setup before I propose an approach.
What’s your approach to testing on ASP.NET Core projects?
Authentication and authorization logic, access-control checks, and anything touching sensitive data get tested deliberately.
Do you handle deployment and Azure hosting, or just the application code?
I can handle both, including working within Azure App Service, configuring app registrations, and setting up the deployment pipeline.
Is this only for enterprise clients, or do smaller teams and startups hire you too?
Both. The common thread isn’t company size — it’s that the project has a real authentication or data-sensitivity requirement.
How do you handle communication for remote engagements across EU/US time zones?
I structure communication around overlap with your team’s working hours, set explicitly during the proposal stage.
Let’s Talk About Your ASP.NET Core Project
If you need an ASP.NET Core developer who treats Azure AD authentication, API security, and sensitive data handling as the actual point of the project, reach out with a short description of your project and I’ll follow up to set up a scoping call.
What if I already have an ASP.NET Core codebase and just need help fixing it?
That’s a common way engagements start. You don’t need to hire an ASP.NET Core developer for a full rebuild — a security and architecture audit of the existing Azure AD integration and API layer often finds the specific issues worth fixing, and the scope gets defined from there.
Do you offer ongoing support after I hire an ASP.NET Core developer for the initial build?
Yes, structured as a retainer. Azure AD, .NET, and the surrounding ecosystem keep evolving, so ongoing support after you hire an ASP.NET Core developer for launch is often worth planning for.
What industries do you typically hire an ASP.NET Core developer for?
Healthcare-adjacent and retail platforms are where most of my ASP.NET Core work has landed, both of which demand real security discipline. Teams that hire an ASP.NET Core developer for regulated or sensitive-data work tend to value that background specifically.
Is it better to hire an ASP.NET Core developer as a contractor or bring one on full-time?
For most projects with defined scope, it’s more cost-effective to hire an ASP.NET Core developer as a contractor for the build, then decide on ongoing needs from there.
What exactly do I get when I hire an ASP.NET Core developer like you?
When you hire an ASP.NET Core developer with my background, you get secure API design, Azure AD / Entra ID authentication, and enterprise-grade backend architecture — proven on healthcare-adjacent and retail platforms.
Why hire an ASP.NET Core developer instead of a generalist backend developer?
Because Azure AD integration, layered architecture, and dependency injection done correctly matter more in ASP.NET Core than in most stacks. When you hire an ASP.NET Core developer with enterprise experience, security and maintainability are built in from the start, not patched on later.
How much does it cost to hire an ASP.NET Core developer for a project?
It depends on scope — hourly for exploratory work, fixed-price once a scope is defined, or a retainer for ongoing work. Most clients who hire an ASP.NET Core developer through me start with a free scoping call.
Can I hire an ASP.NET Core developer for a short, focused engagement?
Yes — a security audit, an Azure AD integration, or a scoped feature are common reasons clients hire an ASP.NET Core developer without a long-term commitment.
Do you hire an ASP.NET Core developer role out to a team?
No. When you hire an ASP.NET Core developer through me, you work directly with the engineer writing the code — not an account manager relaying updates from someone else.
